Yeah, I know; I'll find a way to test the speakers; B-strings 9 volt idea should work. I think my Tubeworks can handle a 2 ohm load, so if I can pull that speakon cable apart I should be able to wire a normal 1/4 in jack just for testing, right?
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Amp shut down, need advice
- Thread starter Freez
- Start date
Do you actually have a cable, rather than an internal connection to the speaker? If so, yes, should be easy to put on a 1/4 jack.
Yes, there is a female speakon on back of head and a hard wired speakon cable that comes out of the speaker cab. Do they make a cable with a speakon end and a 1/4 in end? I could just buy one and test the amp into a different speaker cab that way. But Is till need to pull the speaker cable apart to test those. My Ampeg PF-500 has a speakon jack in back of head, but not supposed to go below 4 ohms. The Kustom amp speakers are 3 ohms. Weird, I know...
"they" do you or "you" can - it's not hard, nor uncommon. $7.98, shipped. Another $5.38 gets you an f-f speakon coupler so you can plug it into your cable, too. Just be sure you have NL-4's before grabbing those (NL-2's can plug into NL-4, but an NL-4 can't plug into an NL-2 jack)
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Don't hook up that 3 ohm load to your PF500. That is asking for trouble. Just do the battery test on the combo's speakers.
Sure thing B-string. Battery test is just touching the speaker wires to the 9 volt terminals; should hear a pop if speakers are ok right?
Hey fellas, hope you guys are still tuned in! Sorry for delay, work has been a bear lately...anyway, took the speakon apart and did the battery test...speakers popped just like they should, so they seem to be fine. Is there anything left for me to do beyond this point to troubleshoot my issue? Incidentally, the amp never did start working again after the last shutdown; still nothing....
Something is going on with the power amp then. Could be a fractured or cold solder joint in the power amp, bad power amp chip if it uses that kind of device, or a power supply problem (higher voltage of a dual voltage supply).
Sorry, no. Could be as cheap as a bench fee ($40-85 depending on the shop) if just a simple cold solder joint that is easily and quickly found.
Thanks B-string; you've been very gracious to help me out with this. One last question; when I disassembled the speakon connector, I neglected to note where the 2 wires hooked up, so I just went positive to 1+ and negative to 1-. That should be right, right?
